Abstract:
A UV light generator for receiving a baseband light beam from a baseband light source is provided. The UV light generator includes a first lens unit, a second lens unit, a first frequency doubling crystal and a second frequency doubling crystal. The baseband light beam from the baseband light source passes through the first lens unit. The first lens unit and the second lens unit control a minimum of baseband light spot position and a minimum of second harmonic light spot position. The first frequency doubling crystal is disposed between the first lens unit and the second lens unit, and located on the minimum of baseband light spot position. The second frequency doubling crystal is disposed between the first lens unit and the second lens unit, and located on the minimum of second harmonic light spot position.
Abstract:
An all-fiber color laser and a light-illuminating method thereof are disclosed. The steps of the light-illuminating method include: providing a fiber color laser having a pump light source and an optical fiber with a multi-level wavelength gain medium, a first grating assembly and a second grating assembly; radiating a laser via the pump light source; generating a plurality of laser beams with various wavelengths via the multi-level wavelength gain medium; adjusting the deformation of the second grating assembly to control output of the laser beams with various wavelengths; and executing periodical modulation to generate a periodical lengthwise deformation of the second grating assembly for mixing color.
Abstract:
A laser apparatus with all optical-fiber includes a plurality of pumping light sources in different wave bands and an optical-fiber laser system. The optical-fiber laser system includes an optical fiber at least doped with erbium (Er) element and doped with or not doped with ytterbium (Yb) element according to a need. The optical-fiber laser system outputs a laser light through the pumping light source.
Abstract:
The present invention is a pump. It has few components. It has a simple producing procedure and a simple assembling procedure. It can reduce the noise occurred when a pump vibrates. And it runs with saved energy.
Abstract:
A method for reducing standard delay format (SDF) file size is disclosed. The state-dependent descriptions in cell descriptions of the SDF file, which are not intended to be used, are removed by referring to a design description of an integrated circuit design. Therefore, the SDF file size is reduced and the simulation result generated by a simulator is not affected with the reduced SDF file.
Abstract:
A power control circuit includes a power switch unit operable so as to enable and disable supply of an input voltage from an external power source to an LC circuit, a voltage detecting unit for generating a first voltage signal in accordance with an output voltage applied to a load and outputted by the LC circuit, and a current detecting unit for generating a second voltage signal in accordance with a current flowing through the power switch unit. A driver receives a pulse width modulation signal from a comparator in accordance with a comparison result between a summation of the first and second voltage signals and a reference voltage, and outputs a driving signal to a control input unit of the power switch unit so as to control a duty cycle of the power switch unit, thereby controlling rated power supplied to the load to correspond to the reference voltage.
Abstract:
A film attaching method for attaching a film on a substrate is provided. The film attaching method includes the following steps. First, a film is disposed on the substrate. Then, gas between the film and the substrate is driven out. Ultimately, an airtight joint is formed between the edge of the film and the edge of the substrate so that the film is attached to the substrate. The film attaching method is applied to the screen of a rear projection television to provide the rear projection television with good optical characteristics.
Abstract:
A power control circuit includes a power switch unit operable so as to enable and disable supply of an input voltage from an external power source to an LC circuit, a voltage detecting unit for generating a first voltage signal in accordance with an output voltage applied to a load and outputted by the LC circuit, and a current detecting unit for generating a second voltage signal in accordance with a current flowing through the power switch unit. A driver receives a pulse width modulation signal from a comparator in accordance with a comparison result between a summation of the first and second voltage signals and a reference voltage, and outputs a driving signal to a control input unit of the power switch unit so as to control a duty cycle of the power switch unit, thereby controlling rated power supplied to the load to correspond to the reference voltage.
Abstract:
A massager has a base, a U shaped housing mounted on the base, a motor received in the housing and having a worm shaft extending out of the motor, a transmission assembly encased in the housing and including a transmission axle, a worm gear, two wobbling wheels mounted on the transmission axle and two kneading plates mounted on the transmission axle and a rubbing assembly having two disks respectively mounted on a free end of each of two driven axles and having two rubbing balls formed on a face of each of the disks.
Abstract:
A massage device has a platform, a motor assembly, a transmission assembly, a massage arm assembly and two massage disk assemblies. The motor assembly has a motor mounted on the platform. The transmission assembly is driven by the motor and has a transverse axle mounted rotatably on the platform. The massage arm assembly has a shoulder mounted on the platform and two rocker arms rotatably mounted on the shoulder. The massage disk assemblies are mounted on the transverse axle and each has a massage pad. The massage arm and disk assemblies move simultaneously in response to the transmission and provide effective massages to multiple muscle groups of a human body.